package com.mandi.common;
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import java.lang.reflect.Method;
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import java.lang.reflect.Type;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.List;
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import org.apache.commons.lang3.StringUtils;
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public class ListSortUtil<T> {
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@SuppressWarnings({ "unchecked", "rawtypes" })
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public void sort(List<T> targetList, final String sortField, final String sortMode) {
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Collections.sort(targetList, new Comparator() {
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public int compare(Object obj1, Object obj2) {
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int retVal = 0;
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try {
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//首字母转大写
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String newStr=sortField.substring(0, 1).toUpperCase()+sortField.replaceFirst("\\w","");
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String methodStr="get"+newStr;
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Method method1 = ((T)obj1).getClass().getMethod(methodStr, null);
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Method method2 = ((T)obj2).getClass().getMethod(methodStr, null);
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if (sortMode != null && "desc".equals(sortMode)) {
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if(method1.invoke(((T) obj2), null)==null||method2.invoke(((T) obj1), null)==null){
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retVal=1;
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}else {
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retVal = method1.invoke(((T) obj2), null).toString().compareTo(method2.invoke(((T) obj1), null).toString()); // 倒序
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}
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} else {
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if(method2.invoke(((T) obj2), null)==null||method1.invoke(((T) obj1), null)==null){
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retVal=-1;
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}else {
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retVal = method2.invoke(((T) obj1), null).toString().compareTo(method1.invoke(((T) obj2), null).toString()); // 正序
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}
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}
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} catch (Exception e) {
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throw new RuntimeException();
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}
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return retVal;
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}
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});
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}
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@SuppressWarnings({ "unchecked", "rawtypes" })
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public void sortFields(List<T> targetList, final List<String> sortFields) {
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Collections.sort(targetList, new Comparator() {
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public int compare(Object obj1, Object obj2) {
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int retVal = 0;
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try {
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for (int i=0;i<sortFields.size();i++) {
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String sortField=sortFields.get(i).split("-")[0];
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String sortMode=sortFields.get(i).split("-")[1];
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//首字母转大写
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String newStr=sortField.substring(0, 1).toUpperCase()+sortField.replaceFirst("\\w","");
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String methodStr="get"+newStr;
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Method method1 = ((T)obj1).getClass().getMethod(methodStr, null);
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Method method2 = ((T)obj2).getClass().getMethod(methodStr, null);
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if(method1==null|| method2==null){
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continue;
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}
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Type tp =method1.getGenericReturnType();
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String tt="";
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boolean sz=false;
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if(tp!=null){
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tt=tp.toString();
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if(!StringUtils.isEmpty(tt)){
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if(tt.contains("int")||tt.contains("double")){
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sz=true;
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}
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}
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}
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if (sortMode != null && "desc".equals(sortMode)) {
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if(method2.invoke(((T) obj2), null)==null){
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retVal=0;
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continue;
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}else if(method1.invoke(((T) obj1), null)==null){
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retVal=0;
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continue;
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}else {
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if(sz){
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if(!method1.invoke(((T) obj2), null).toString().equals(method2.invoke(((T) obj1), null).toString())){
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if(tt.contains("int")){
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if(Integer.parseInt(method1.invoke(((T) obj2), null).toString())>Integer.parseInt(method2.invoke(((T) obj1), null).toString())){
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retVal = 1; // 倒序
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}else if(Integer.parseInt(method1.invoke(((T) obj2), null).toString())<Integer.parseInt(method2.invoke(((T) obj1), null).toString())){
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retVal = -1;
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}else{
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retVal = 0; // 倒序
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continue;
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}
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break;
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}else if(tt.contains("double")){
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if(Double.parseDouble((method1.invoke(((T) obj2), null).toString()))>Double.parseDouble(method2.invoke(((T) obj1), null).toString())){
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retVal = 1; // 倒序
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}else if(Double.parseDouble(method1.invoke(((T) obj2), null).toString())<Double.parseDouble(method2.invoke(((T) obj1), null).toString())){
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retVal = -1;
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}else{
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retVal = 0; // 倒序
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continue;
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}
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break;
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}
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}else{
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retVal =0;
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continue;
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}
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}else{
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if(!method1.invoke(((T) obj2), null).toString().equals(method2.invoke(((T) obj1), null).toString())){
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retVal = method1.invoke(((T) obj2), null).toString().compareTo(method2.invoke(((T) obj1), null).toString()); // 倒序
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break;
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}else{
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retVal =0;
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continue;
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}
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}
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}
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} else {
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if(method1.invoke(((T) obj1), null)==null){
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retVal=0;
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continue;
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}else if(method2.invoke(((T) obj2), null)==null){
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retVal=0;
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continue;
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}else {
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if(sz){
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if(!method2.invoke(((T) obj1), null).toString().equals(method1.invoke(((T) obj2), null).toString())){
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if(tt.contains("int")){
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if(Integer.parseInt(method1.invoke(((T) obj1), null).toString())>Integer.parseInt(method2.invoke(((T) obj2), null).toString())){
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retVal =1;
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break;
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}else if(Integer.parseInt(method1.invoke(((T) obj1), null).toString())<Integer.parseInt(method2.invoke(((T) obj2), null).toString())){
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retVal =-1;
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break;
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}else{
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retVal=0;
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continue;
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}
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}else if(tt.contains("double")){
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if(Double.parseDouble(method1.invoke(((T) obj1), null).toString())>Double.parseDouble(method2.invoke(((T) obj2), null).toString())){
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retVal =1;
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break;
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}else if(Double.parseDouble(method1.invoke(((T) obj1), null).toString())<Double.parseDouble(method2.invoke(((T) obj2), null).toString())){
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retVal =-1;
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break;
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}else{
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retVal=0;
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continue;
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}
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}
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}else{
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retVal=0;
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continue;
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}
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}else{
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if(!method2.invoke(((T) obj1), null).toString().equals(method1.invoke(((T) obj2), null).toString())){
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retVal = method2.invoke(((T) obj1), null).toString().compareTo(method1.invoke(((T) obj2), null).toString()); // 正序
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break;
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}else{
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retVal=0;
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continue;
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}
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}
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}
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}
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}
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} catch (Exception e) {
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throw new RuntimeException();
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}
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return retVal;
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}
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});
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// System.out.println("targetList:::::"+Jacksonmethod.tojson(targetList, false));
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}
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}
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